Upper Receivers

Build your custom AR or AK variant at Classic Firearms. For those of you who want to drop in an upper and hit the range without delay, we offer complete uppers in multiple barrel lengths and popular calibers including 7.62x39, 5.56x45 and .223 / .556. For the home gunsmiths out there, we’ve got stripped down mil-spec uppers. Check out our full range of accessories to get your additional components such as the trap door assembly, forward assist andoptics.